WO1996029182A1 - Futter mit kupplung - Google Patents
Futter mit kupplung Download PDFInfo
- Publication number
- WO1996029182A1 WO1996029182A1 PCT/EP1996/000504 EP9600504W WO9629182A1 WO 1996029182 A1 WO1996029182 A1 WO 1996029182A1 EP 9600504 W EP9600504 W EP 9600504W WO 9629182 A1 WO9629182 A1 WO 9629182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chuck
- sleeve
- diameter
- screw shaft
- housing
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
- B23B31/1071—Retention by balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
Definitions
- the invention relates to a chuck with a coupling for tensioning head and / or stud bolts according to the preamble of claim 1.
- Linings of this type are known and are described, for example, in DE 26 21 932 and DE 34 29 558 C2.
- the known coupling is a stamped and bent part which, for manufacturing reasons, cannot be either thick or hard.
- the well-known and spring-hard part is therefore exposed to wear, which makes it necessary to replace it soon, particularly when processing large wood screws that require a considerable screwing torque for their assembly.
- the consequence of this is that the user must be provided with replacement clutch disks, which he must also replace himself.
- the invention has for its object to further develop the generic lining without undue design effort so that the coupling is practically wear-free and can be used even under the toughest operating conditions.
- both the drive shaft and the screw shaft are provided with external polygons which can be non-positively connected to one another via a sleeve.
- the sleeve is equipped with corresponding inner polygons. With these polygons, which can be moved against each other, the operational connection between the screw shaft and the drive shaft can be easily established. Uncoupling the two shafts is also not a problem.
- a coupling sleeve is used which is axially displaceable in a known manner by means of an adjusting disk. The more detailed functioning of the coupling sleeve and the chuck is described in detail in the generic document DE 26 21 932.
- the polygons used in the invention are preferably designed as hexagons.
- the hexagon of the output shaft is preferably designed so that its corner dimension corresponds approximately to the diameter of the shaft. This ensures that the least possible force is required for the transmission of the torques.
- Show it 1 is a chuck in axial cross section
- Fig. 3 shows a connection between a screw shaft and a
- FIG. 5 shows the part labeled V according to FIG. 1 enlarged
- FIG. 9 is a half-shell according to FIG. 1 and in axial cross section
- Fig. 10 is an adjusting disc in axial plan view
- FIG. 1 the coupling member of FIG. 1 in axial cross section.
- a chuck 10 is shown for tightening head and stud bolts during the screwing-in process.
- the chuck 10 consists of a bearing sleeve (not shown) with the shank of the screw, radially displaceably mounted in the bearing sleeve clamping balls 38, an axially mounted clamping sleeve 34 surrounding the bearing sleeve for the clamping balls 38 and a bearing sleeve penetrating screw sleeve 1 1.
- the clamping sleeve 34 and the bearing sleeve are each arranged longitudinally displaceably against the force of a spring.
- the clamping sleeve 34 is provided in the region of the holding position of the clamping ball 38 with a clamping cone which, under the action of the spring tension, presses the clamping balls 38 together and thus against the shaft of the screw. Axially next to the clamping cone, a free space is provided for receiving the clamping balls 38 when a cap screw is inserted. Both the bearing sleeve and the clamping sleeve 34 are in the same direction under the pretension of one spring each, which press these two sleeves from an abutment located at the rear end of the chuck 10 in the direction of the screwing point.
- This abutment consists of an abutment tube which engages in the clamping sleeve (housing 34) and which accommodates coupling parts to limit the screw-in depth.
- the clamping cone, not shown, of the clamping sleeve 34 is closer to the screw-in point than its free space for the clamping balls 38. Between the clamping cone and the free space, a stop shoulder is provided to limit the path of the bearing sleeve to the screw-in point.
- the chuck 10 shown in section in FIG. 1 has a housing 34 consisting of two shells for tensioning head and / or stud bolts.
- the chuck 10 also has a screw shaft 1 1 and an axially arranged drive shaft 1 2 with respect to the screw shaft 1 1 with a spring-loaded and adjustable in the direction of the double arrow coupling element 1 8, which can be operatively connected to a counter element 50 of the screw shaft 1 1.
- a spring-loaded, axially adjustable and the coupling member 18 out of operation adjusting sleeve 22 is provided, which is axially adjustable in the direction of the central double arrow.
- the coupling member 18 has a recess 6 (cf. FIG.
- the projection 59 and the associated recess 6 face each other. It can also be seen that the projection 59 in effective operating position of the clutch is housed in the recess 6.
- the projection 59 is complementary to the recess 6 and has a cross-section different from the circle. In the preferred embodiment shown here, the projection 59 is a hexagon which can be connected to the corresponding recess 6 with a precise fit.
- the coupling member 18 is also designed in the form of an axially adjustable sleeve which cannot be rotatably connected to the drive shaft 12 and which is in pressure connection with a helical or helical spring 16.
- the helical spring 1 6 is arranged and clamped between a snap ring 14 and the outside of the coupling member 1 8.
- the helical spring 16 strives to press the coupling member 18 against the adjusting sleeve 22.
- the adjusting disk 20 shown in FIG. 10 is arranged.
- the chuck 10 further includes an intermediate sleeve 24 which is connected to the screw shaft 1 1 via a connecting member 48.
- the lower end of the intermediate sleeve 24 has a collar 56 on which the housing 34 is supported.
- a coil spring 28 is arranged, which projects into an inwardly open annular groove 26 of the adjusting sleeve 22.
- the coil spring 28 endeavors to press the adjusting sleeve 22 against the coupling member 18.
- the force of the coil spring 28 is less in the axial direction than the force of the coil spring 16, so that the adjusting sleeve 22 assumes the position shown in FIG. 1 in the rest position of the chuck.
- the housing 34 consists of two identical half-shells, for example made of plastic or metal, the joints of which extend in the axial direction.
- the casing of the housing 34 is approximately cylindrical.
- two grooves 32 and 43 open radially outward are formed, each of which receives a clamping ring 30, 44.
- the housing 34 is positively surrounded by a cylindrical and axially attachable sleeve 36.
- the sleeve 36 is supported via its one axial end face on the collar 1 of the housing 34, while in the area of the other axial side the clamping ring 30 protrudes from its annular groove 32 and against the sleeve 36 presses radially inside.
- the sleeve 36 has a diameter widening 39 with a truncated cone-shaped bevel 37 (cf. FIG. 5).
- the depth of the ring grooves 32, 43 is at least as large as the thickness of the clamping rings 30, 44, measured in the radial direction.
- the clamping ring 30 In the relaxed state, the clamping ring 30 is only partially arranged in its annular groove 32. If the sleeve 36 is now moved in the axial direction and with respect to the housing 34 upwards, namely in the direction of the coupling member 18, then the bevel 37 presses against the clamping ring 30 and moves it into its groove 32, from which it is fully accommodated .
- the sleeve 36 can be removed from the housing 34.
- the force that must be applied depends on the angle of the slope 37, which is preferably 10 to 50 °.
- the clamping ring 44 which is arranged in its groove 43, and the clamping ring 30 can then be detached from the housing 34, so that the two half-shells can detach from the chuck.
- Balls 38 and a blade 17 known from the prior art are also accommodated within the housing 34.
- a further coil spring 46 is arranged in the housing 34.
- the extension 42 of the drive shaft 12 passes through the diameter reduction 82, whereby the end in the extension 42 carries a radial and outwardly open ring groove with a snap ring 19.
- This snap ring 19 is supported on a slope 19 'between the opening 17 and the diameter reduction 82.
- the drive shaft 1 2 assumes an axially immovable position with respect to the screw shaft 1 1.
- FIGS. 3 and 6 Another possibility of connecting the drive shaft 12 to the screw shaft 11 is shown in FIGS. 3 and 6.
- a blind hole 47 is formed in the screw shaft 11, into which the extension 42 protrudes.
- the length of the blind bore 47 corresponds to the length of the extension 42.
- the extension 42 has an annular groove 41 which is open radially outwards, while an annular groove 49 which is open radially inwards is formed in the blind bore 47 of the section 45 with a bevel 57.
- the snap ring 43 is partially in the annular groove 41 and partially in the annular groove 49 in the relaxed or tensioned state.
- the radial depth of the annular groove 49 is dimensioned such that it corresponds to at most half the thickness (radius) of the snap ring 43.
- the snap ring 43 In its operating position, the snap ring 43 is supported on the bevel 57, the angle of inclination of which can preferably be 10 to 60 °. The greater the angle of inclination of the bevel 57, the greater the force which must be applied in order to be able to detach the extension 42 from the screw shaft 11. If an inseparable connection is to be made between these two parts, then the angle of the bevel 57 is approximately 90 °. If the extension 42 is now pulled out of the blind hole 47, then the bevel 57 presses against the snap ring 43, whereby it is displaced into the annular groove 41, so that the extension 42 can be released from the screw shaft 11. By this connection, the two parts can be easily connected as well as released. It is a type of connector that is made by moving two parts. Problems that occur with screw connections - screws with washers and a screwdriver are required - do not occur here. 7, 8, 9 and 11 show further details of the parts shown in FIG. 1.
- adjusting disc 20 In Fig. 10, the adjusting disc 20 is shown, which has three radially outwardly protruding knobs 3 and a central opening 4. The adjusting disc 20 interacts with the adjusting sleeve 22. However, this is described in more detail in DE 26 21 932.
- the coupling member 18 which is designed in the form of a sleeve, has a hexagon opening 62 which cooperates with the hexagon collar 66 of the drive shaft 12 when the hexagon collar 66 is arranged in the region of the hexagon opening 62. Between the hexagon collar 66 and the disk 14, a reduction in diameter 60 of the drive shaft 1 2 with a circular cross section is arranged, so that in this area the drive shaft 1 2 is not in engagement with the coupling member 18.
- the coupling member 18 also has a cylindrical section 64, the inside diameter of which is larger than the corner dimension of the hexagon collar 66. In this area the collar 66 can rotate without being in engagement with the coupling member 18.
- FIG. 4 shows the coupling elements in the decoupled state.
- the upper end of the screw shaft 1 1 is shown enlarged.
- An axial bore 42 'for the extension 42 can be seen.
- An annular groove 48' is formed for the connecting element 48 (snap ring).
- An annular collar 50 adjoins the annular groove 48 ', the diameter of which corresponds to the diameter of the intermediate sleeve 24.
- a hexagon 59 adjoins the cylindrical annular collar 50, the corner dimension of which corresponds to the outer diameter of the screw shaft 11.
- the screw shaft 1 1 must be machined minimally.
- the hexagon 59 is followed by a cylindrical taper 59 ', the outer diameter of which corresponds to the width across flats of the hexagon 59. This taper causes the coupling member 18 to be centered and guided relative to the hexagon 59.
- the chuck 10 can be held on its rotatable sleeve 36 during the screwing-in process, because this enables precise and ambidextrous guidance of the hand drill. If the chuck 10 is screwed over the head, for example in hardboard or plasterboard, it is inevitable that chips or crumbs will fall into the chuck 10, so that it is necessary to clean the chuck 10 more often by blowing it out. For this purpose, its inner parts must be accessible, that is, the housing 34 should be able to be removed quickly and easily. This is achieved according to the invention in that the sleeve 36 can be pulled axially from the housing in the direction of the slope 37.
- FIG. 4A A further, particularly inexpensive embodiment of the coupling is shown in FIG. 4A and consists of the hexagon drive shaft 12, a short intermediate piece 12 'with the same hexagon dimension and the coupling sleeve 18 with only one continuous hexagon socket which corresponds to the parts to be connected .
- the intermediate piece 12 'with inner bore 82 for the passage of the cylindrical part 42 of the drive shaft 12 is rotatably connected to the screw shaft 1 1 and protrudes from the end face of this with its free end.
- the spring-loaded coupling sleeve 1 8 now connects the protruding part of the intermediate piece 12 'to the drive shaft 12.
- the coupling sleeve 18 overlaps the screw shaft 1 1, which is used for its control and concentric guidance. If the coupling sleeve 1 8 is now displaced from the adjusting disk 20 in the direction of the drive shaft 1 2, it loses engagement with the intermediate piece 12 ′ and in this way uncouples the drive shaft and the screw shaft 1 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59610849T DE59610849D1 (de) | 1995-03-21 | 1996-02-07 | Futter mit kupplung |
EP96901790A EP0817704B1 (de) | 1995-03-21 | 1996-02-07 | Futter mit kupplung |
DE19680157T DE19680157D2 (de) | 1995-03-21 | 1996-02-07 | Futter mit Kupplung |
AU46226/96A AU4622696A (en) | 1995-03-21 | 1996-02-07 | Chuck with coupling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19510169A DE19510169A1 (de) | 1995-03-21 | 1995-03-21 | Futter mit Kupplung |
DE19510169.3 | 1995-03-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996029182A1 true WO1996029182A1 (de) | 1996-09-26 |
Family
ID=7757240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/000504 WO1996029182A1 (de) | 1995-03-21 | 1996-02-07 | Futter mit kupplung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6192776B1 (de) |
EP (1) | EP0817704B1 (de) |
AU (1) | AU4622696A (de) |
CA (1) | CA2224862A1 (de) |
DE (3) | DE19510169A1 (de) |
WO (1) | WO1996029182A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7387054B2 (en) * | 2006-03-01 | 2008-06-17 | Jacques Rajotte | Screw driving device |
US7306396B1 (en) * | 2006-08-08 | 2007-12-11 | Chen Bo Shen | Connector structure with a detachable mounting tube |
US7735400B2 (en) * | 2007-08-20 | 2010-06-15 | Ho-Tien Chen | Torque releasing clutch for a screw driver blade |
DE102009052526A1 (de) * | 2008-11-12 | 2010-05-27 | Neumayer Tekfor Holding Gmbh | Dämpfereinheit für eine Welle |
TWM551535U (zh) * | 2015-12-10 | 2017-11-11 | 米沃奇電子工具公司 | 鑽頭夾具總成 |
US10821579B2 (en) | 2016-11-07 | 2020-11-03 | Jacques Rajotte | Screw driving device for use with an impact driver |
US10974374B2 (en) | 2018-12-19 | 2021-04-13 | Jacques Rajotte | Impact driver screw driving device with depth adjustment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2621932A1 (de) * | 1976-05-17 | 1977-11-24 | Kajetan Leitner | Futter zum spannen von kopf- und stiftschrauben beim einschraubvorgang |
EP0086352A2 (de) * | 1982-02-12 | 1983-08-24 | Wera-Werk Hermann Werner GmbH & Co. | Schraubkopf |
DE3330962A1 (de) * | 1983-08-27 | 1985-03-21 | Eberhard Dipl.-Ing. Beyhl (FH), 8503 Altdorf | Schraubbegrenzungsvorrichtung |
DE3429558A1 (de) * | 1984-08-10 | 1986-02-20 | Kajetan 8170 Bad Tölz Leitner | Futter zum spannen von kopf- und stiftschrauben beim einschraubvorgang |
US4809572A (en) * | 1986-12-09 | 1989-03-07 | Makita Electric Works, Ltd. | Power driven screwdriver |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293699B (de) * | 1969-04-24 | BiIz, Otto, 7300 Eßlingen | Schrauberspindel mit Einschraubvorrichtung für Stehbolzen | |
US2152977A (en) * | 1936-08-01 | 1939-04-04 | Independent Pneumatic Tool Co | Automatic lock nut |
US2430044A (en) * | 1945-09-19 | 1947-11-04 | Campsmith Robert John | Screw driver and the like |
DE1792899U (de) * | 1959-04-20 | 1959-07-30 | Mario Liva | Schraubeinsatz fuer elektrowerkzeuge. |
DE2506522C3 (de) * | 1975-02-15 | 1978-04-13 | Heinz 7847 Badenweiler Oesterle | Werkzeughalter |
US4606246A (en) * | 1985-01-02 | 1986-08-19 | Gunther John R | Socket wrench coupler |
DE3610749A1 (de) * | 1986-03-29 | 1987-10-01 | Helfer & Co Kg | Kraftantreibbarer schraubkopf |
US5341708A (en) * | 1993-07-09 | 1994-08-30 | Nick Edward V | Fastener support apparatus |
US5682800A (en) * | 1996-03-05 | 1997-11-04 | Jore; Matthew B. | Clutch driver |
-
1995
- 1995-03-21 DE DE19510169A patent/DE19510169A1/de not_active Withdrawn
-
1996
- 1996-02-07 AU AU46226/96A patent/AU4622696A/en not_active Abandoned
- 1996-02-07 WO PCT/EP1996/000504 patent/WO1996029182A1/de active IP Right Grant
- 1996-02-07 DE DE19680157T patent/DE19680157D2/de not_active Expired - Fee Related
- 1996-02-07 DE DE59610849T patent/DE59610849D1/de not_active Expired - Fee Related
- 1996-02-07 CA CA002224862A patent/CA2224862A1/en not_active Abandoned
- 1996-02-07 EP EP96901790A patent/EP0817704B1/de not_active Expired - Lifetime
-
1997
- 1997-09-22 US US08/935,019 patent/US6192776B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2621932A1 (de) * | 1976-05-17 | 1977-11-24 | Kajetan Leitner | Futter zum spannen von kopf- und stiftschrauben beim einschraubvorgang |
EP0086352A2 (de) * | 1982-02-12 | 1983-08-24 | Wera-Werk Hermann Werner GmbH & Co. | Schraubkopf |
DE3330962A1 (de) * | 1983-08-27 | 1985-03-21 | Eberhard Dipl.-Ing. Beyhl (FH), 8503 Altdorf | Schraubbegrenzungsvorrichtung |
DE3429558A1 (de) * | 1984-08-10 | 1986-02-20 | Kajetan 8170 Bad Tölz Leitner | Futter zum spannen von kopf- und stiftschrauben beim einschraubvorgang |
US4809572A (en) * | 1986-12-09 | 1989-03-07 | Makita Electric Works, Ltd. | Power driven screwdriver |
Also Published As
Publication number | Publication date |
---|---|
AU4622696A (en) | 1996-10-08 |
DE19680157D2 (de) | 1998-08-20 |
US6192776B1 (en) | 2001-02-27 |
EP0817704B1 (de) | 2003-12-03 |
CA2224862A1 (en) | 1996-09-26 |
DE19510169A1 (de) | 1996-09-26 |
DE59610849D1 (de) | 2004-01-15 |
EP0817704A1 (de) | 1998-01-14 |
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